The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 1976
Filed:
May. 03, 1973
Toshio Atsumi, Ooi, JA;
Kenji Kobayashi, Takarazuka, JA;
Yoshiaki Takebayashi, Takarazuka, JA;
Hisao Yamamoto, Nishinomiya, JA;
Abstract
2-Ketoethyl-6,7-benzomorphan derivatives of the formula: ##SPC1## And their pharmaceutically acceptable non-toxic salts, which are useful as non-addictive analgesics and pain-relieving agents and can be prepared by reacting the corresponding 6,7-benzomorphan derivative of the formula: ##SPC2## With a vinyl carbonyl compound of the formula: ##EQU1## [wherein R' is a hydrogen atom or a group of the formula: --OR' (wherein R' is a hydrogen atom, an alkanoyl group, an alkyl group, an aralkyl group, an alkoxycarbonylmethyl group or a tetrahydropyranyl group), R.sub.1 is a hydrogen atom, an alkyl group or a substituted or unsubstituted aryl group, R.sub.2 is a hydrogen atom or an alkyl group and A is an alkyl group, an alkoxy group, a substituted or unsubstituted aryl group or a substituted or unsubstituted amino group].